Charger V6-2.7L (2008)
Crankshaft Main Bearing: Service and Repair
CRANKSHAFT MAIN BEARING FITTING
The main bearings are "select fit" to achieve proper oil clearances. For main bearing selection, the block and crankshaft have grade identification marks.
The grade marks for the cylinder block main bearing bore grade is located on the pan rail just below the left side engine mount bracket. These marks are
read left to right, corresponding to main bore 1, 2, 3, 4.
The grade marks for the crankshaft are located on the rearmost crankshaft counter weight as shown in. The crankshaft journal grade marks are read left
to right, corresponding with journal number 1, 2, 3, 4.
Refer to the MAIN BEARING SELECTION CHART - 2.7L to properly select the main bearings. For an example, if the main bore grade is 3 and the
journal grade is 2, the proper select fit bearing would be (2) +0.003 mm (+0.0002 in.). Each bearing grade increment of 0.003 mm is for wall thickness
so diametrical clearances are adjusted 0.006 m per select fit class.
